Package mil.nga.geopackage.features.user

Class FeatureCache

java.lang.Object

mil.nga.geopackage.features.user.FeatureCache

public class FeatureCache
extends Object

Feature Row Cache for a single feature table

Since:

3.2.0

Author:

osbornb

Field Summary

Fields

Modifier and Type	Field	Description
static int	DEFAULT_CACHE_MAX_SIZE	Default max number of feature rows to retain in cache

Constructor Summary

Constructors

Constructor	Description
FeatureCache()	Constructor, created with cache max size of DEFAULT_CACHE_MAX_SIZE
FeatureCache(int size)	Constructor

Method Summary

Modifier and Type	Method	Description
void	clear()	Clear the cache
void	clearAndResize(int maxSize)	Clear and resize the cache
FeatureRow	get(long featureId)	Get the cached feature row by feature id
int	getMaxSize()	Get the cache max size
int	getSize()	Get the current cache size, number of feature rows cached
FeatureRow	put(FeatureRow featureRow)	Cache the feature row
FeatureRow	remove(long featureId)	Remove the cached feature row by id
FeatureRow	remove(FeatureRow featureRow)	Remove the cached feature row
void	resize(int maxSize)	Resize the cache

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

DEFAULT_CACHE_MAX_SIZE

public static final int DEFAULT_CACHE_MAX_SIZE

Default max number of feature rows to retain in cache

See Also:

Constant Field Values

Constructor Detail

FeatureCache

public FeatureCache()

Constructor, created with cache max size of DEFAULT_CACHE_MAX_SIZE

FeatureCache

public FeatureCache(int size)

Constructor

Parameters:

size - max feature rows to retain in the cache

Method Detail

getMaxSize

public int getMaxSize()

Get the cache max size

Returns:

max size

getSize

public int getSize()

Get the current cache size, number of feature rows cached

Returns:

cache size

get

public FeatureRow get(long featureId)

Get the cached feature row by feature id

Parameters:

featureId - feature row id

Returns:

feature row or null

put

public FeatureRow put(FeatureRow featureRow)

Cache the feature row

Parameters:

featureRow - feature row

Returns:

previous cached feature row or null

remove

public FeatureRow remove(FeatureRow featureRow)

Remove the cached feature row

Parameters:

featureRow - feature row

Returns:

removed feature row or null

remove

public FeatureRow remove(long featureId)

Remove the cached feature row by id

Parameters:

featureId - feature row id

Returns:

removed feature row or null

clear

public void clear()

Clear the cache

resize

public void resize(int maxSize)

Resize the cache

Parameters:

maxSize - max size

clearAndResize

public void clearAndResize(int maxSize)

Clear and resize the cache

Parameters:

maxSize - max size of the cache